/*
 * Copyright (c) 2007-2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: NSInfo.java,v 1.2.4.1 2005/09/15 08:15:48 suresh_emailid Exp $
 */
package com.sun.org.apache.xml.internal.utils;

/**
 * This class holds information about the namespace info
 * of a node.  It is used to optimize namespace lookup in
 * a generic DOM.
 * @xsl.usage internal
 */
public class NSInfo {

    /**
     * Constructor NSInfo
     *
     *
     * @param hasProcessedNS Flag indicating whether namespaces
     * have been processed for this node
     * @param hasXMLNSAttrs Flag indicating whether this node
     * has XMLNS attributes.
     */
    public NSInfo(boolean hasProcessedNS, boolean hasXMLNSAttrs) {

        m_hasProcessedNS = hasProcessedNS;
        m_hasXMLNSAttrs = hasXMLNSAttrs;
        m_namespace = null;
        m_ancestorHasXMLNSAttrs = ANCESTORXMLNSUNPROCESSED;
    }

    // Unused at the moment

    /**
     * Constructor NSInfo
     *
     *
     * @param hasProcessedNS Flag indicating whether namespaces
     * have been processed for this node
     * @param hasXMLNSAttrs Flag indicating whether this node
     * has XMLNS attributes.
     * @param ancestorHasXMLNSAttrs Flag indicating whether one of this node's
     * ancestor has XMLNS attributes.
     */
    public NSInfo(boolean hasProcessedNS, boolean hasXMLNSAttrs, int ancestorHasXMLNSAttrs) {

        m_hasProcessedNS = hasProcessedNS;
        m_hasXMLNSAttrs = hasXMLNSAttrs;
        m_ancestorHasXMLNSAttrs = ancestorHasXMLNSAttrs;
        m_namespace = null;
    }

    /**
     * Constructor NSInfo
     *
     *
     * @param namespace The namespace URI
     * @param hasXMLNSAttrs Flag indicating whether this node
     * has XMLNS attributes.
     */
    public NSInfo(String namespace, boolean hasXMLNSAttrs) {

        m_hasProcessedNS = true;
        m_hasXMLNSAttrs = hasXMLNSAttrs;
        m_namespace = namespace;
        m_ancestorHasXMLNSAttrs = ANCESTORXMLNSUNPROCESSED;
    }

    /** The namespace URI          */
    public String m_namespace;

    /** Flag indicating whether this node has an XMLNS attribute          */
    public boolean m_hasXMLNSAttrs;

    /** Flag indicating whether namespaces have been processed for this node */
    public boolean m_hasProcessedNS;

    /** Flag indicating whether one of this node's ancestor has an XMLNS attribute          */
    public int m_ancestorHasXMLNSAttrs;

    /** Constant for ancestors XMLNS atributes not processed          */
    public static final int ANCESTORXMLNSUNPROCESSED = 0;

    /** Constant indicating an ancestor has an XMLNS attribute           */
    public static final int ANCESTORHASXMLNS = 1;

    /** Constant indicating ancestors don't have an XMLNS attribute           */
    public static final int ANCESTORNOXMLNS = 2;
}
